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Natali V. C.Gonçalves
Departamento de Engenharia Elétrica e Computação, Escola de Engenharia de São Carlos, SP
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André M Kernbichler
Departamento de Engenharia Elétrica, UFSCar, SP
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Tatiane C. C. Fernandes
Departamento de Engenharia Elétrica, UFSCar, SP
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Ahda P.Grilo-Pavani
Departamento de Engenharia Elétrica, UFSCar, SP
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Rodrigo Andrade Ramos
Departamento de Engenharia Elétrica e Computação, Escola de Engenharia de São Carlos, SP
Keywords:
Small-Signal Stability, Wind Power, Uncertainty, Wide-Area Damping Controller, Stability
Abstract
This paper presents an approach to incorporate the uncertainty of wind power generation in the design of Wide-Area Damping Controllers (WADCs). The approach is based on the Cross-Entropy method and allows obtaining deviations from the predicted output power that result in violations of the small-signal stability margin. The Cross-Entropy based algorithm allows accelerating the convergence of the sampling generation by making adaptive changes to the probability density function, minimizing the variance. As a result, the worst scenarios are identified and, consequently, the Wide-Area Damping Controllers can be designed to enhance the damping factors of the system for critical conditions. The proposed approach procedure was applied to a modified version of the IEEE Benchmark 68-bus NETS-NYPS System, with significant penetration of wind power generation. The results show that the WADC designed is effective to damp low-frequency electromechanical oscillations even in critical conditions of power injections from wind power sources.
